*8.43 The NMOS transistor in the circuit of Fig. P8.43 has Vt = 0.5 V, knW/L = 2 mA/V2, and VA = 20 V. (a) Neglecting the dc current in the feedback network and the effect of r o, find VGS. Then find the dc current in the feedback network and V DS. Verify that you were justified in neglecting the current in the feedback network when you found VGS (b) Find the small-signal voltage gain, vo/vi. What is the peak of the largest output sine-wave signal that is possible while the NMOS transistor remains in saturation? What is the corresponding input signal? (c) Find the small-signal input resistance Rin

8.43 - *8.43 The NMOS transistor in the circuit of Fig. P8.43 has Vt = 0.5 V, knW/L = 2 mA/V2, and VA = 20 V. (a) Neglecting the dc current in the feedback network and the effect of r o, find VGS. Then find the dc current in the feedback network and V DS. Verify that you were justified in neglecting the current in the feedback network when you found VGS (b) Find the small-signal voltage gain, vo/vi. What is the peak of the largest output sine-wave signal that is possible while the NMOS transistor remains in saturation? What is the corresponding input signal? (c) Find the small-signal input resistance Rin

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images - *8.43 The NMOS transistor in the circuit of Fig. P8.43 has Vt = 0.5 V, knW/L = 2 mA/V2, and VA = 20 V. (a) Neglecting the dc current in the feedback network and the effect of r o, find VGS. Then find the dc current in the feedback network and V DS. Verify that you were justified in neglecting the current in the feedback network when you found VGS (b) Find the small-signal voltage gain, vo/vi. What is the peak of the largest output sine-wave signal that is possible while the NMOS transistor remains in saturation? What is the corresponding input signal? (c) Find the small-signal input resistance Rin

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